Test Piece Fabrication for WPQR
Test piece fabrication for WPQR: Creating weld samples under real production conditions for in-house examination of technological properties.
Physical-Chemical Mechanism of Action
WPQR test piece fabrication involves making weld samples under the same conditions as the actual fabrication shop. This includes using the same material, welding technique and parameters, as well as the same environmental conditions.
Metallurgical Relevance & Welding Risks
Testing these samples is crucial to ensure the technological properties of the welding procedure. Incorrect or insufficient test piece fabrication can lead to faulty results, which in turn can cause invalid WPQR certificates and potential risks in the use of the fabricated parts.
Workshop Practice & Action Instructions
To ensure successful WPQR test piece fabrication, you need to follow these steps:
1. Use the same material as in the fabrication shop.
2. Select the correct welding technique and parameters.
3. Set the same environmental conditions, like temperature and humidity.
4. Carefully document all steps of test piece production.